Liquid-sampling apparatus



July L27, 1926... 1,593,623 A D. J. ELLIOTT ET AL LIQUID SAMPLINGAPPARATUS Filed Nov. 2l, 1925 2 'Sheets-Sheet l July 27 1926.

D. J. ELLIOTT ET AL LIQUID SAMPLING APPARATUS 2 Sheets-Sheet 2 FiledNov. 2l, 1925 Patented `luly v27, 12926. l

UNITED STATES 1,593,623 PATENT oi-EicE/.ll

DONALD JOHN ELLIOTT, F CLAIRTON, AND GWYNNE CELLAN JONES, 0F ERIE,

PENNSYLVANIA.

'LIQUID-SAMPLING APPARATUS.

Application led November This invention relates to liquid samplinglaplgiaratus and has for one of its -objects the vprovision of a novelform of apparatus whereby average vsamples ofv a constantly changing`body of liquid in a pipe or vessel are automatically collected.

Another object ris to provide an apparatus having -lthe novelconstruction, design and combination of parts hereinafter described andillustrated in the accompanying drawings. v

- In the drawings- Figure 1 is a side elevation showing our Y apparatusconnected with-a liquid conveying conduit.

Figure 2 is asectional elevation on the l line IIe-Hof Figure 1.

Figure 3 is a sectional elevation on the line III-III' of Figure 2.

Referring more particularly to the drawings, the numeral 2 designates apipe line for `conveying lightv oils from a still to a suitable tank.

A sample' outlet pipe 3 is tapped into the 'pipe 2 and is provided witha valve 4 for controlling the yHow therethrough.

A main stationary receiving tank 5 is povsitionedbelow the pipe 3 and isprovided with an outlet or drain pipe 6 at its lower end.

Ahollow shaft 7 is journaled in bearings 8 in thetank 5 and a pair ofsampling receptacles 9 and 10 are secured to the shaft 7. Thereceptacles project a considerable distance beyond the shaft so thatwhen a predetermined amount of liquid is collected in either one of thereceptacles it will be overbalanced vand causethe shaft to rotate aboutits axis thus moving the filled receptacle into 'discharging positionand moving` the other receptacle intofilling position.

The 'receptacles 9 and 10 are provided with ,overlowsampling tubes 11and 12,

respectivel which are tapped into the holl; and supported b 1 brackets.13. The tubes 11 and 12 are eac `provided at their upper ends `withthreaded sleeves 14 'which may be screwed up or down to regulate thequantity of sample overilow.

Therear end of the shaft 7 is closed by a plug l5 while the forward endis open to permit the liquid overflowingl through the tubes 11 and 12 toflow out lnto a sample container 16. p A. pair of stop bars 17 varemounted in the 21, 1925. Serial No. 70,721.

anced receptacles 9 and 10, and thereby stop their movement when theother receptacle is in receiving position.

In operation the valve 4: `iiv'ill be adjusted so as to permit a smalliow from the pipe 2 through the pipe 3. Either one of the receptacles 9or 10 will be positioned to re-` ceive the flow of liquid fromthe pipe 3and lwill retain the liquid until a quantity has flowed through theoverow 'tube at which time the weight of the liquid will overbalance thefilled. receptacle causing the shaft 7 to rotate in its bearings 8, andmove the receptacle downwardly so as to dump or discharge the liquidinto the tank 5. Simultaneously with the movement of the filledreceptacle into l discharging position the other empty receptacle willbe moved into receiving position to receive the liquid from the pipe 3since both receptacles are secured to the same shaft. The secondreceptacle will then fill and a part of the liquid therein willdischarge through its overflow tube prior to the receptacle beingoverbalanced to discharge its liquid and move the rst receptacie backinto receiving position. The receptacles 9 and 10 will thus alternatelybe moved into receiving and discharging position ccntinuously as long asthe valve 4 remains open.

The liquid samples overflowing through the tubes 11 and 12 will ow intothe hollow shaft 7 and then into the sample container 16.

By the use of` the mechanism above described average samp'les areobtained. 'lhat is, the liquid Ioverflowing lthrough the tubes 11 and 12will be an average or mixture of what is collected over a period of timein the receptacles 9 and 10 and this average sample fluid is furthermixed in the container 16 so that the liquid in the container 16 istruly a representative sample of the fluid in the tanksupplied by thepipe 2.

It will be readily seen that in order to' collect such an average sampledirectly from the pipe 2 without the use of the above describedmechanisma great quantity ot the liquid would have to be collected,which would require large storage tanks and re' be limited thereto,since various modifications may be made without departing from the scopeof our invention as described in the appended claims.

We claim:

1. The combination with a liquid container having an outlet, of a liquidsampling mechanism adapted to receive liquid from said outlet, saidmechanism comprising a main stationary receiver, a hollow shaftjournaled in said main receiver, a pair of sampling receptacles mountedon said shaft to receive the liquid from said outlet, said ree ceptaclesprojecting beyond the opposite sides of said shaft respectively so thatwhen a predetermined amount of liquid is collected in either of saidreceptacles said receptacle will be overbalanced and rock said shaft,thereby moving out of the path of the liquid from said outlet and movingthe other of said receptacles into position to receive the liquid, saidoverbalanced receptacle discharging the liquid contained therein intosaid main receiver, and an overflow pipe comprising relativelyadjustable telescoping sections and located in each of said samplingreceptacles, said pipes opening into said hollow shaft and adapted topermit a -predetermined amount of liquid to flow from said samplingreceptacles into a suitable container just prior tc the overbalancing ofsaid receptacles;

2. The combination with a liquid container having an outlet, of a liquidsampling mechanism adapted to receive liquid from said outlet, saidmechanism comprising a main stationary receiver, a hollow shaftvjournaled in said main receiver, a pair of sampling receptacles mountedon said shaft to receive the liquid from said outlet, said receptaclesprojecting beyond the opposite sides of said shaft respectively, so thatwhen a predetermined amount of liquid is collected in either of saidreceptacles said receptacle will be overbalanced and rock said shaft,thereby moving out of the path of the liquid from said outlet and movingthe other of said receptacles into position to receive the liquid, saidoverbalanced receptacle discharging the liquid contained therein intosaid main receiver, and an overfiow pipe comprising relativelyadjustable telescoping sections and located in each of said samplingreceptacles adapted to permit the overflow of a small sample of liquidfrom said sampling receptacles just prior to the overbalancing of saidreceptacles, and means for receiving the overflow samples from saidoverflow pipe.

ln testimony whereof, l have hereunto set my hand.

DONALD JOHN ELLIOTT.

In testimony whereof, I have hereunto set my hand.

GWYNNE CELLAN JONES.

